(65407) 2002 RP120

Trans-Neptunian object August 2026 yes (65407) 2002 RP 120 #C2E0FF LONEOS Anderson Mesa Stn. 4 September 2002 (65407) 2002 RP 120 TNOdamocloidunusualdistant 27 April 2019 (JD 2458600.5) 2 3.35 yr (1,225 d) 105.39 AU 2.4544 AU 53.920 AU 0.9545 395.95 yr (144,619 d) 15.061° 0.0025 ms / day 118.97° 39.263° 357.79° −0.8340 14.6 2.8 km 200 h 0.098 0.036 B–R 1.37 12.3 (65407) 2002 RP 120 is a trans-Neptunian object and damocloid from the outer Solar System. Its orbit is retrograde and comet-like, and has a high eccentricity. It was discovered on 4 September 2002 by astronomers with the LONEOS survey at Anderson Mesa Station, Arizona, in the United States. The unusual object measures approximately 14.6 km mi off us in diameter and is likely elongated in shape. It is a slow rotator and potentially a tumbler as well. The object was probably ejected from the ecliptic by Neptune.November 2018 Orbit and classification 2002 RP 120 is a member of the damocloids, with a retrograde orbit and a negative TJupiter of −0.8340. It is also a trans-Neptunian object, as its orbit has a semi-major axis larger than that of Neptune (30.1 AU). The Minor Planet Center lists it as a critical object, centaur, and (other) unusual minor planet due to an orbital eccentricity of more than 0.5. It orbits the Sun at a distance of 2.5–105 AU once every 396 years (semi-major axis of 53.92 AU). Its orbit has an eccentricity of 0.95 and an inclination of 119° with respect to the ecliptic. The body's observation arc begins with a precovery taken by Astrovirtel I03 at ESO's La Silla Observatory in February 2001, or 19 months prior to its official discovery observation at Anderson Mesa. Numbering and naming This minor planet was permanently numbered 65407 (65407) by the Minor Planet Center on 14 June 2003 (M.P.C. 48994). As of 2018, it has not been named. Physical characteristics The object has a B–R magnitude of 1.37, typical for most dynamical groups in the outer Solar System. Rotation period In October 2010, a rotational lightcurve of 2002 RP 120 was obtained from photometric observations by French amateur astronomer René Roy. Lightcurve analysis gave a rotation period of 200 hours with a brightness amplitude of 0.6 magnitude, indicative of an elongated, non-spherical shape (U=2). With a rotation period above 100 hours, it is a typical slow rotator. Diameter and albedo According to the survey of minor-planet albedos of bodies in a comet-like orbit, carried out by Yanga Fernández in collaboration with David Jewitt and Scott Sheppard at the Institute for Astronomy, Hawaii, 2002 RP 120 measures 14.6 kilometers in diameter and its surface has an albedo of 0.098. Johnston's archive gives a rounded figure of 15 kilometers. References 2004-06-22 last obs. JPL Small-Body Database Browser: 65407 (2002 RP120) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2065407 Jet Propulsion Laboratory 20 November 2018 65407 (2002 RP120) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=65407 20 November 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 20 November 2018 List of Other Unusual Objects Minor Planet Center 14 November 2018 https://www.minorplanetcenter.net/iau/lists/t_others.html 20 November 2018 List of Known Trans-Neptunian Objects Johnston's Archive 30 December 2017 Johnston Wm. Robert http://www.johnstonsarchive.net/astro/tnoslist.html 1 March 2018 Asteroids and comets rotation curves – (65407) Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page5cou.html#065407 1 March 2018 https://web.archive.org/web/20181111134209/http://obswww.unige.ch/~behrend/page5cou.html#065407 11 November 2018 dead 65407 1 March 2018 Yanga R. Fernández David C. Jewitt Scott S. Sheppard July 2005 Albedos of Asteroids in Comet-Like Orbits The Astronomical Journal 130 1 308–318 2005AJ....130..308F 10.1086/430802 53642261 External links List Of Centaurs and Scattered-Disk Objects, Minor Planet Center (65407) 2002 RP120 https://web.archive.org/web/20200915150345/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=65407 15 September 2020 , Small Bodies Data Ferret 65407 65407 (65407) 2002 RP 120 065407 065407 065407 065407 20020904 Category:Minor planets with a retrograde orbit 065407 065407 065407